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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: May 2004 Posts: 150 Wrench Fetcher | | Wrench Fetcher Joined: May 2004 Posts: 150 | I'm putting in new wiring harness, and want to know on dimmer switch which of the bottom two connectors is high beams, which one for low beams. Of course the top connector is for battery. thanks
Last edited by starsfan; 05/06/2013 11:56 AM.
| | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | headlamp upper beam-center post
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The center is the hot lead. It doesn't matter which of the other ones go to the high or low.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Aug 2011 Posts: 687 Shop Shark | | Shop Shark Joined: Aug 2011 Posts: 687 | curious what year is your truck and which harness did you get? I am leaning toward the $149 harness from classic. | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | ...click... Above is from the assembly manual. It shows center upper beam, Bottom lower beam, If is not your year/type switch a quick test with a continuity meter will determine your hot post Good luck | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | I wonder when they changed? The center lug is the hot lead on my '38. <CLICK>
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| | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | Not sure,
His earlier post deal with 50 or 51
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | 1950 wiring diagram makes it look like center is hot ... as does every other year diagram .... should be obvious from the construction of the switch, the same 1936-1954, after which they went to a plug in type that's 'fool proof'  Bill | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Ive been doing it for 60 years & have never found one different then that. The headlight sealed beam conectors are not concentric likev that. It can fool you.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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